SEARCH Articles Figures Tables Catalyst chromium Catalyst copper-chromium Catalysts copper oxide Chromium oxidants Chromium oxidation catalyst Chromium oxide Chromium oxide catalysts Chromium oxids Chromium-copper Copper - chromium oxide catalyst for aldehyde synthesis Copper - chromium oxide catalyst for hydrogenation Copper - chromium oxide catalyst hydrogenolysis with Copper catalyst Copper oxidized Oxidants copper Oxidative coppering Oxides chromium oxide Oxidic copper